#include<iostream>
#include<cmath>
#include<algorithm>
using namespace std;
typedef long long LL;
int main()
{
	double ans = 0;
	int n = 0;
	double x = 1;
	while (ans <= 10) {
		n++;
		x = 1.0 / n;
		ans += x;
		//cout << x << endl;
	}
	cout << n << endl;
	return 0;
}